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ICD-10-PCS 2027 procedure code

01994ZZDrainage of Lumbar Plexus, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 01994ZZ

01994ZZ is the ICD-10-PCS code for a drainage procedure on the lumbar plexus using a percutaneous endoscopic approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

In plain terms, this corresponds to other incision of cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.04).

For a different body part, codes include 01904ZZ (cervical plexus), 01914ZZ (cervical nerve), 01924ZZ (phrenic nerve), 01934ZZ (brachial plexus), 01944ZZ (ulnar nerve), 01954ZZ (median nerve) and 16 more.

The same procedure with a different approach is coded 01990ZZ (open) and 01993ZZ (percutaneous).

With a different device, use 019940Z (drainage device).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator) and DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), under the surgical category “Peripheral, Cranial Nerve and Other Nervous System Procedures”.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
0Medical and Surgical
2. Body System
1Peripheral Nervous System
3. Operation
9Drainage

Taking or letting out fluids and/or gases from a body part

The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies

Includes: Thoracentesis, incision and drainage

4. Body Part
9Lumbar Plexus

Includes: Accessory obturator nerve; Genitofemoral nerve; Iliohypogastric nerve; Ilioinguinal nerve; Lateral femoral cutaneous nerve; Obturator nerve; Superior gluteal nerve

5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different device

Different qualifier

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

ICD-9-CM equivalent

Converter →
  • 04.04Other incision of cranial and peripheral nervesapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 01994ZZ

Is 01994ZZ a valid ICD-10-PCS code for 2027?

Yes. 01994ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 01994ZZ an O.R. procedure?

Yes. 01994ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 01994ZZ group to?

Depending on the principal diagnosis, 01994ZZ can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 01994ZZ?

The CMS GEMs map 01994ZZ to ICD-9-CM 04.04 (Other incision of cranial and peripheral nerves).